At the end of this section you should be able to:

1. Properly apply normal- and friction forces onto FBDs with interacting surfaces

   • Write proper equilibrium equations from the FBDs

2. Find at what point a system will be on the verge of motion (from an applied force, moment, etc.)

   • Create additional sets of equations based on objects possibly slipping or tipping

3. Determine if a system will be in motion or equilibrium under given parameters and conditions